Pile-wire-withdrawing device for looms



June 4,1929. J,PETE 'Q 1,715,947

FILE WIRE WITHDRAWING DEVICE FOR LOOMS Filed Jan. 4, 1928 '[Wm for Patented June 4, 1929.

UNITED STATES PATENTOFF ICE.

JOHN PETERO, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO CEOMPTON &

KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

IPILE-WIRE-WITHDRAWING DEVICE FOR LOOMS.

Application filed January 4, 1928.

This invention relates to that type of pile fabric loom in which the pile wires are inserted and withdrawn by movements lengthwise of the lay and transversely of the fabric. The pile warps are looped over successive pile wires and the tufts are formed by the cutting action of knives mounted on the pile wires and drawn through the loops as the wires are pulled from the fabric.

The pile wires are successively inserted in the shed and beaten into the fabric and are successively withdrawn at a definite point in the travel of the cloth. A special wire withdrawing device is provided to engage and withdraw the wires one at a time and to thereafter reinsert the wires in the open shed of the fabric.

This general type of loom is common and well known and in its broad features forms no part of my present invention, the object of which is to provide improvements in the wire withdrawing device by which'the operation of the device is improved and the wear on the pile wires is substantially reduced.

The invention is more specifically described in the following specification and is defined in the appended claims.

A preferred form of the invention is shown in the drawings in which- Fig. 1 is a front elevation, partly in section, showing my improvements in connec tion with certain associated parts;

Fig. 2 is a plan view of the parts shown in Fig. 1;

Fig. 3 is an enlarged plan View of the wire withdrawing device, certain parts being shown in section;

Fig. 4 is a view similar to Fig. 3 but showing the parts in a dilferent position; and

Fig. 5 is an enlarged front elevation, partly in section, and taken along the line 5-5 in Fig. 3.

Referring to the drawings, I have shown portions of a loom comprising a stand 10 on which a plurality of pile wires 12 are slidably supported. A stop plate 14 engages the head 15 of the most advanced pile wire and maintains the same in position for engagement by the withdrawing device.

A slide 16 is mounted on a guide-way 17 and is reciprocated by a link 18, actuated by suitable driving mechanism, not shown.

My improved withdrawing device 20 is slotted at 21 to receive bolts 22 by which Serial No. 244,516.

it is adjustably secured to the slide 16. The device 20 is provided with a transverse opening 24-. at its forward end, in which a latch pin 26 is slidably mounted.

One end of the pin is beveled and undercut as'indicatedat 28, adapting it to yieldingly enter a recess 30 in the pile wire head 15, thus connecting the pile wire to the with-v drawing device as indicated in Fig. 3. Fig. 4; indicates the relative position of the latch pin during the advance movement of the device 20 alongside the head 15 and before the pin 26 has entered the recess 30.

At its opposite end, the pin 26 is provided with a somewhat enlarged head 32 and is flattened or slabbed off just under the head as indicated at 33 in Figs. 1 and 5. This flattened or slabbed portion fits loosely within a slot 34 (Fig. 5) in the end of a spring 36 which is secured to the side of the device 20 by a clamping screw 38.

The pin 26 is thus yieldingly slidable in the transverse opening 24 but is held from rotation, so that the beveled and under-cut portions at the operative end of the pin are always correctly positioned to engage the pile wire heads 15.

The construction herein shown has been found extremely reliable in operation and the yielding of the pin 26 during the advance movement of the device 20 is found to very greatly reduce the wear on the heads 15, which wear under the old practice necessitated quite frequent renewals! of the heads 15.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed otherwise than as set forth in the claims, but what I claim is 1. In a loom, a pile wire having a head with a recess therein, a pile wire withdrawing device movable adjacent said head, a latch pin slidably mounted in a transverse opening in said device, and means to yieldingly advance said latch pin into said head recess when aligned therewith, said latch pin having a beveled wire-engaging end portion by which said pin is moved axially out of the path of said head as said withdrawing device moves forward to operative position.

2. In a loom, a pile wire having a head with a recess therein, a pile wire withdrawing device movable adjacent said head, a

latch pin slidably mounted in a transverse vice moves forward to operative position, opening in said device, means to yieldingly and means to hold said latch pin from anadvance said latch pin into said head recess gular displacement.

When aligned therewith, said latch pin hav- In testimony whereof I have hereunto afing a beveled Wire-engaging end portion by fixed my signature.

which said pin is moved axially out of the path of said head as said Withdrawing de- JOHN PETERO. 

